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Applied Structured Systems Analysis
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Practical Guidelines
Segment Outline:
- Determine if the system is data oriented or process oriented
- Is the proposed system or business requirements to be met highly data dependent? If YES
- Prepare a Statement of Purpose
- Concentrate on the Entity Relationship Model and the Data Dictionary
- Build State Transition Diagrams for the 1 to 4 most important entities
- Explanation of how to use and reconcile the State Transition Diagrams to determine process or an
External Event List
- Create multi-level DFD Process Models
- Generate a proposal for a detailed analysis of the system
- If NO, the system is not highly data dependent
- Prepare a Statement of Purpose
- Generate External Event List of candidate external events to which the
system must respond
- Create individual Data Flow Diagrams for each process responding to each external event
- Create DFD Process Model with 2 -3 balanced levels resulting from the External Event List
- Prepare additional Entity Relationship diagrams
- Prepare additional State diagrams to validate DFD processes
- Generate a proposal for a detailed analysis of the system
- Additional guidelines are discussed and addressed based on the system being process or data driven.
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